# Posts by anon

Total # Posts: 2,729

**Algebra 1 Please help**

A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: f(n) = 8(1.05)n Part A: When the scientist concluded his study, the height of the plant was approximately 11.26 cm. ...

*December 17, 2016*

**calculus!**

use the definition of derivative to find d/dx(1/(3-x))

*December 16, 2016*

**Science**

Completely right, thanks man!

*December 16, 2016*

**Math**

Statistical questions will have. A)Only one correct answer**** B)A variety of answers C)Fewer than three answers D)No answers

*December 15, 2016*

**Algebra**

Thank you.

*December 15, 2016*

**Algebra**

oh I just realized I put it on B not C sorry

*December 15, 2016*

**Algebra**

For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. 8|13 16|26 24|39 A:yes;y=5x B:yes;y=10x*** C:yes;y=1.625x D:no;y does not vary directly with x

*December 15, 2016*

**American Government**

1. D, 2. B, 3. B 100%

*December 14, 2016*

**Math**

Thank you so much, Merry Christmas if you celebrate.

*December 14, 2016*

**Math**

Find the lower, upper and interquartile range 20,22,25,28,29,30,32,33,34 Math is not my best subject.

*December 14, 2016*

**Health**

Okay, thank you so much.

*December 14, 2016*

**Health**

I don't have a textbook.

*December 14, 2016*

**Health**

In some cultures, people choose not to eat any type of animal products. How might these people get the protein they need? A)fruits that have a pit-mangos, avocados, apricots, and peaches B)lots of green leafy vegetables**** C)nuts, dried beans, dries peas and lentils D)root ...

*December 14, 2016*

**Calculus AB**

The position function of a particle in rectilinear motion is given by s(t) = 2t^3 - 21t^2 + 60t + 3 for t ? 0. Find the position and acceleration of the particle at the instant when the particle reverses direction. Include units in your answer. So I've already gotten the ...

*December 13, 2016*

**American Government**

1. D 2. B 3. B

*December 12, 2016*

**TX HIST**

I have answers, I'm not sure if they are valid so I was trying to get a 2nd opinion. Thanks.

*December 11, 2016*

**TX HIST**

During the 20th century, what has happened to make TX more like the rest of the nation? On the other side of that question, what is truly distinctive about TX that will have a continuing influence on TX’s future?

*December 11, 2016*

**TX HIST**

For the borders, they were set from the Treaty of Guadalupe Hidalgo and the Compromise of 1850 right? I know its border followed the Rio Grande but I don't know much more

*December 11, 2016*

**TX HIST**

How did Lyndon Johnson alter southern politics? What was it about his being a Texan that influenced him in these actions? How were Texas’ borders created? What is the history of its distinctive shape?

*December 11, 2016*

**TX HIST**

Okay thank you!

*December 11, 2016*

**TX HIST**

For the first one, they were all racial cases correct? And they all favored that race?

*December 11, 2016*

**TX HIST**

I just need the answer to that question in a few sentences

*December 11, 2016*

**TX HIST**

Consider these three Supreme Court cases Smith v. Allwright (1944), Sweatt v. Painter (1950), Brown v. Board of Education (1954). What do they have in common, and how did Texans respond? In the 20th century, what were the most important events for Mexican-Americans and the ...

*December 11, 2016*

**math**

equation of a straight line perpendicular to x-axis passing through the point (3,-1)

*December 10, 2016*

**Math**

thanks

*December 10, 2016*

**Algebra 1**

Thank you! @Steve

*December 9, 2016*

**Algebra 1**

1.) Which best describes a system of equations that has no solution? •consistent, independent •inconsistent, dependent •consistent, dependent •inconsistent* ANSWER: D Please check my answer, thank you!

*December 9, 2016*

**Math - Calculus**

Find the area of the surface of revolution generated by revolving the curve y = 3 sqrt (x), 0 <= x <= 4, about the x-axis. Okay, so I've set up the integral like this: 2pi ?[0,4] (3 sqrt (x))(sqrt(1+(1/4x)))dx Which is coming out to 108.5, but that's not giving ...

*December 8, 2016*

**Equations and Inqualities Help!!**

I need the right answers to the lesson 14 7 A unit test equations and inqualities

*December 8, 2016*

**backwards substitution**

15x \equiv 20 (mod 88) 13=88-5*15 2=15-1*13 1=13-2*6 GCF is 1. Im trying to use backwards substitution and so far have 1=13-2*(15-1*13) but I dont understand what to do next, can anyone help?

*December 7, 2016*

**Social Studies Pretest Lesson 1 Unit 7**

B B C D C B B B A

*December 7, 2016*

**math**

if 7 times the 7th term of an A.P is equal to 11 times its eleventh term , what will be its 18th term?

*December 7, 2016*

**CAL 3**

Use the Divergence Theorem to calculate the surface integral S F · dS; that is, calculate the flux of F across S. F(x, y, z) = 3xy2i + xezj + z3k, S is the surface of the solid bounded by the cylinder y2 + z2 = 1 and the planes

*December 6, 2016*

**Affine ciphers, modular inverse**

So using the inverse of 17 modulo 26 I have -3(y-4)(mod 26) first am I correct? (I originally started with -3(y+22)(mod 26)) And im now trying to decipher a simple message. Which I will plug the numbers of the letters into the equation instead of y. Again am I doing this ...

*December 6, 2016*

**CALC**

Use the Divergence Theorem to calculate the surface integral S F · dS; that is, calculate the flux of F across S. F(x, y, z) = x^4i ? x^3z^2j + 4xy^2zk, S is the surface of the solid bounded by the cylinder x^2 + y^2 = 4 and the planes z = x + 6 and z = 0.

*December 6, 2016*

**CALC**

Use the Divergence Theorem to calculate the surface integral S F · dS; that is, calculate the flux of F across S. F(x, y, z) = x&2yi + xy^2j + 2xyzk, S is the surface of the tetrahedron bounded by the planes x = 0, y = 0, z = 0, and x + 3y + z = 3.

*December 6, 2016*

**American Government**

thx! 100% :)

*December 6, 2016*

**history**

Damn your super impatient lmao. '_'

*December 5, 2016*

**Urgent!**

A hospital nursery has 3 boys and some girls. A child was selected at random what is the probability that the child is a boy?

*December 3, 2016*

**Math - Calculus**

Nevermind, I got it: ?[0,1]2pi(x+1)(8-2x-6x^2)dx = 41pi/3

*December 2, 2016*

**Math - Calculus**

The region in the first quadrant bounded by y=6x^2 , 2x+y=8, and the y-axis is rotated about the line x=-1. The volume of the resulting solid is: Please help me set up the integral for this one, I'm not sure how to do it. I've tried ?[-4/3,1] pi (8-2x-1)^2-(6x^2-1)^2 ...

*December 2, 2016*

**Calculus**

Find the area of the region in the first quadrant between the curves y=x^8, and y=2x^2-x^4

*December 2, 2016*

**English Help ASAP**

@ reed , if you're not going to 'help' then don't come on here lol

*December 1, 2016*

**Social Studies**

"...I long to hear that you have declared an independency- and by the way in the new Code of Laws which I suppose it will be necessary for you to make I desire you would Remember of the Ladies, and be more generous and favorable to them than your ancestors...If particular...

*December 1, 2016*

**Social Studies**

minnie you are not right you got 1 right that is all the actual answers are as follows 1. D 2. A 3. A 4. D

*December 1, 2016*

**Algebra**

What is the algebraic expression for the following word phrase: the product of 4 and x. A: 4+x B: 4x C: 4-x D: 4/x I think it's A. Am I right?

*December 1, 2016*

**Calculus**

For which pair of functions f(x) and g(x) below will the lim(x->infinity) f(x)g(x)?0 a)f(x) = 10x + e^-x; g(x) = (1/5x) b)f(x) = x^2; g(x) = e^-4x c)f(x) = (Lnx)^3; g(x) = 1/x d)f(x) = ?x; g(x) = e^-x

*November 30, 2016*

**Science physics**

A ship is heading north at 15km/h in a tide moving at 6km/h westward. Determine the magnitude and direction of the resultant velocity of the ship.

*November 30, 2016*

**Algebra 2**

ht tp: //w ww. 17 28. org/ cub ic2. h tm *remove the spaces in between. I hope this will help you. It explains the actual process of factoring cubic equations.

*November 28, 2016*

**American History**

The federal government sets requirements that all public schools must follow, while state governments set standards listing what students need to learn. This is an example of what constitutional system? A. dual federalism B. cooperative federalism C. layered federalism D. ...

*November 27, 2016*

**MATH**

x = cost of 1kg flour y = cost of 1kg sugar 5x + 4y = $ 14.80 x = (14.80 - 4y)/5 3x/4 = 3y/5 (3/4)*[(14.80 - 4y)/5] = 3y/5 2.22 - 0.6y = 0.6y 1.2y = 2.22 y = $1.85 x = $1.48

*November 27, 2016*

**Maths**

Expand first the equation. Find the intercepts. Find the domain and range of the function. The intercepts will serve as the turning points. Since the leading coefficient (of x^3) is positive, the graph of f is up on the right and down on the left and hence the range of f is ...

*November 27, 2016*

**Trigonometry**

Try solving the problems first on your own and check if the answer you got is correct. tips: Simplify the form like sec(x)to 1/cos(x). if the problem is the arctan, arcsin, and the likes, try to convert the equation into something like this: x = arctan (cot(10pi/9)) tan(x) = ...

*November 27, 2016*

**Trigonometry**

x = arctan[cot(10pi/9)] = arctan[1/tan(10pi/9) = arctan[1/tan((9+1)pi/9)] = arctan{1/tan([(9/9)+(1/9)]pi)} = arctan[1/tan(pi/9)] tan(x)-1/tan(pi/9)=0 [tan(pi/2)*tan(x)-1]/tan(pi/2)=0 tan(pi/2)*tan(x)-1=0 Express in sin and cos. Use identities also. (lol, go solve the details. ...

*November 27, 2016*

**Physics**

Thanks. :D

*November 27, 2016*

**Physics**

Block A, with a mass of 10 kg, rests on a 36.9° incline. It is attached to a string that is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, also with a mass of 10 kg, is attached to the dangling end of the string. The two blocks...

*November 27, 2016*

**Socials Studies**

What are the major changes?

*November 27, 2016*

**math**

length of each side of rhombus: a = sqrt[(AD)^2 + (BD)^2] / 2 Solve. a = 5 cm

*November 27, 2016*

**MATHS**

The question is an example of uniform circular motion -> circle. kph to mpm (meters per minute): 72kph -> 1200 m/min cm to m: 84 cm -> 0.84m circumference of the wheel = pi. diameter = 3.14 * 0.84m = 2.6376m length of 1 revolution = circumference = 2.6376m in 11 min: ...

*November 27, 2016*

**MATHS**

Circle.

*November 27, 2016*

**maths**

No one likes those subjects. They are all lying. (Just kidding!) English: 40*(3/8) = 15 students out of 40 likes it. Math: 40*(2/5) = 16 students out of 40 likes it. Science: 40*(3/4) = 30 students out of 40 likes it.

*November 27, 2016*

**math**

Speed formula: s = d/t distance (d) varies directly as speed (s): d is proportional to speed. d is also proportional to time (t).

*November 27, 2016*

**English**

For conformity and order.

*November 27, 2016*

**math**

SA = 6*a^2 = 6*(1)^2 = 6cm^2 the question just confuses you.

*November 27, 2016*

**physics**

F = m*a a = F/m F1 = m1*(12) F2 = m2*(3.3) F1 = F2 m1*(12) = m2*(3.3) m1 = m2*(3.3/12) 1. m = m1-m2 a = F/(m1-m2) a = F/[(m2*(3.3/12)-m2] a = (m2*3.3)/[(-29/40)*m2] a = -132/29 m/s^2 (<-- goes to negative direction) *if m = m2-m1, a = 132/29 m/s^2 2. m = m1+m2 a = F/[(m2*(3...

*November 27, 2016*

**Chemistry**

I don't get the part where you got the .00509 mol HCl. This is how I solved it. Ba(OH)2 + 2HCl ===> BaCl2 + 2H2O Note: M (molarity) = moles of solute / liters of solution m (molality) = moles of solute / kg of solvent 24.81 ml --> 0.02481 L Tip: to make ur life ...

*November 26, 2016*

**American Government**

When Alabama's governor refused to end the policy of segregation in public universities, he invoked which common argument for separation of powers under federalism? A.states' rights B.checks and balances C.direct initiative D.bicameral legislation I think the answer is...

*November 26, 2016*

**American Government**

A woman is asked to serve on a jury. Instead of hearing two sides of the case, she only hears from the prosecutors, who ask the jury to decide whether they think someone is probably guilty. The state will only arrest the person and hold a formal trial if the jury feels it ...

*November 26, 2016*

**Social Studies**

Describe the Texans’ actions—how Texas came to exist. (America - Mexico war)

*November 25, 2016*

**Calculus**

Find the biggest value of c that satisfy the Mean Value Theorem for integrals for f(x)= 1/(x+1)^6 on the interval [0,7]

*November 23, 2016*

**math-IS MY ANSWER RIGHT?**

I got 261 PI

*November 23, 2016*

**math-IS MY ANSWER RIGHT?**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

*November 23, 2016*

**Math**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

*November 23, 2016*

**Calc 3**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

*November 23, 2016*

**Calculus**

Use Stokes' Theorem to evaluate C F · dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = yzi + 9xzj + exyk, C is the circle x2 + y2 = 1, z = 3.

*November 23, 2016*

**Calculus**

I'm very confused on this?

*November 23, 2016*

**Calculus**

A particle moves along line segments from the origin to the points (3, 0, 0), (3, 3, 1), (0, 3, 1), and back to the origin under the influence of the force field F(x, y, z) = z2i + 2xyj + 3y2k. Find the work done.

*November 23, 2016*

**Calc**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = xy i + yz j + zx k S is the part of the paraboloid z = ...

*November 23, 2016*

**Calc**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = y i ? x j + z2 k S is the helicoid (with upward ...

*November 23, 2016*

**Calc**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

*November 23, 2016*

**Calc**

Use Stokes' Theorem to evaluate C F · dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = xyi + 5zj + 7yk, C is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 9.

*November 23, 2016*

**Calculus**

The radius of a conical tank is 2.7 meters and the height of the tank is 4.3 meters. Water is flowing into the tank at a constant rate of 59.5 m3/minute. At the instant the the depth of the water is 0.6 meters, answer the following: (A) At what rate is the depth of the water ...

*November 23, 2016*

**Math**

Use Stokes' Theorem to evaluate C F · dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = xyi + 5zj + 7yk, C is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 9.

*November 22, 2016*

**Math**

Use Stokes' Theorem to evaluate S curl F · dS. F(x, y, z) = x2z2i + y2z2j + xyzk, S is the part of the paraboloid z = x2 + y2 that lies inside the cylinder x2 + y2 = 25, oriented upward.

*November 22, 2016*

**american goverment check answers**

thanks anonymous! 10/10 100% :)

*November 21, 2016*

**Calc III**

Find the absolute maximum of the function f(x,y) = x^2 + 4y on the set of points (x,y) that satisfy x^2 + y^2 < or = to 25. I understand that you have to check the endpoints and find critical points, but I cannot solve this. Thank you.

*November 20, 2016*

**history**

yup answers are correct according to -_-, 5 is just D btw

*November 18, 2016*

**Math**

I think they want me to take the square root of 25 (which is 5) and add -9 which becomes -4. So is -4 a whole number, integer, radical? I know it isn't irrational

*November 18, 2016*

**Math**

I said the answer as is. They want to know what type of number you get when you add the square root of 25 and -9. sorry I don't understand this stuff

*November 18, 2016*

**Math**

Answers: Whole Number Irrational Number Integer Radical

*November 18, 2016*

**Math**

I don't understand :(

*November 18, 2016*

**Math**

When added the square root of 25 and -9 which type of number is the sum?

*November 18, 2016*

**social studies**

Lmao^

*November 18, 2016*

**Art**

Use reference for starters. Watch drawing tutorials. Research. And most of all, practice.

*November 17, 2016*

**Math**

A rectangle is dilated using a scale factor of 6. The image is then dilated using a scale factor of 1/3. What scale factor could you use to dilate the original rectangle to get to the final rectangle. Explain.

*November 17, 2016*

**American Government**

those are right, 100%

*November 17, 2016*

**history**

i got 100%

*November 16, 2016*

**Math**

^ lol. anonymous answer is very smart. xD

*November 16, 2016*

**American Government**

yup, 100% correct. thanks anonymous

*November 15, 2016*

**Physics - Buoyant Force Question**

Find the buoyant force on a helium balloon in air (Standard Pressure and Temperature) if the balloon is spherical with diameter 12.0 cm.

*November 11, 2016*